194 lines
4.4 KiB
C++
194 lines
4.4 KiB
C++
/**************************************************************************
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*
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* examples.h - common definitions to condition example code for broken
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* compilers; must be #included last, _after_ all lib headers.
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*
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* The goal of this file is to allow completely conforming syntax
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* in examples' code even with non-conforming compilers.
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*
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* $Id: examples.h 550991 2007-06-26 23:58:07Z sebor $
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*
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***************************************************************************
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*
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* Copyright 1994-2006 Rogue Wave Software.
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*
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**************************************************************************/
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#ifndef EXAMPLES_H_INCLUDED
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#define EXAMPLES_H_INCLUDED
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#ifdef _RWSTD_NO_NAMESPACE
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# define std
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#endif // _RWSTD_NO_NAMESPACE
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#ifdef _RWSTD_NO_TYPENAME
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# define typename
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#endif // _RWSTD_NO_TYPENAME
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#ifdef _RWSTD_NO_FOR_LOCAL_SCOPE
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# define for if (0) ; else for
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#endif // _RWSTD_NO_FOR_LOCAL_SCOPE
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#include <cstddef> // for ptrdiff_t
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#ifdef _RWSTD_NO_LIBC_IN_STD
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_RWSTD_NAMESPACE (std) {
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// accomdate compilers that don't have size_t in namespace std
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_USING (::size_t);
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_USING (::ptrdiff_t);
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} // namespace std
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#endif // _RWSTD_NO_LIBC_IN_STD
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#ifdef _RWSTD_NO_CLASS_PARTIAL_SPEC
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// supply conforming versions of count, count_if and distance for platforms
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// that do not correctly support partial specialization of class templates
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_RWSTD_NAMESPACE (std) {
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template<class InputIter, class T>
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size_t count (InputIter a, InputIter b, const T& x)
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{
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size_t n = 0;
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count (a, b, x, n);
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return n;
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}
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template<class InputIter, class T>
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size_t count_if (InputIter a, InputIter b, const T& x)
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{
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size_t n = 0;
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count_if (a, b, x, n);
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return n;
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}
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template<class InputIter>
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size_t distance (InputIter a, InputIter b)
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{
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size_t n = 0;
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distance (a, b, n);
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return n;
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}
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} // namespace std
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#endif // _RWSTD_NO_CLASS_PARTIAL_SPEC
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#ifdef _RWSTD_NO_TEMPLATE_ON_RETURN_TYPE
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#if !defined (_MSC_VER) || _MSC_VER > 1300
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_RWSTD_NAMESPACE (std) {
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#define has_facet fake_has_facet
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#define use_facet fake_use_facet
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// fake std::use_facet
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template <class Facet>
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struct has_facet
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{
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has_facet (const std::locale &loc)
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#ifndef _RWSTD_NO_TEMPLATE_ON_RETURN_TYPE
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: result (std::has_facet<Facet>(loc)) { }
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#else
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: result (std::has_facet (loc, (Facet*)0)) { }
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#endif // _RWSTD_NO_TEMPLATE_ON_RETURN_TYPE
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operator bool () const {
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return result;
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}
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bool result;
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};
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// fake std::use_facet
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template <class Facet>
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struct use_facet
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{
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use_facet (const std::locale &loc)
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: facet (std::_USE_FACET (Facet, loc)) { }
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operator const Facet& () const {
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return facet;
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}
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const Facet &facet;
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};
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} // namespace std
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#else // if defined (_MSC_VER) && _MSC_VER <= 1300
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# define _HAS_FACET(facet, locale) has_facet (locale, (facet*)0)
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#endif // !defined (_MSC_VER) || _MSC_VER > 1300
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#endif // _RWSTD_NO_TEMPLATE_ON_RETURN_TYPE
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#ifdef _RWSTD_NO_EXCEPTIONS
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# define try if (1)
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# define catch(ex) else if (0) for (ex ; 0 ; )
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# define throw(ignore) abort ()
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#endif // _RWSTD_NO_EXCEPTIONS
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#ifdef _RWSTD_NO_WCHAR_T
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// remove `L' from wide string literals
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#define L
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// fake wide stream objects
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#define wcin cin
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#define wcout cout
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#define wcerr cerr
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#define wclog clog
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// fake wide string and stringstream
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#define wstring string
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#define wstringstream stringstream
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#define wchar_t char
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#endif // _RWSTD_NO_WCHAR_T
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// undefine macros #defined by some evil C libraries (e.g., MSVC)
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#undef max
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#undef min
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#endif // EXAMPLES_H_INCLUDED
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